Bilge-water pump



2 Sheets-Sheet 1;

(No Model.)

000K. BILGE WATER PUMP.

No. 419,929. Patented Jan. 21, 1899.

anveyvroz 2 Shets-Sheet 2. A. COOK.

BILGE WATER PUMP.

(No Model.)

No. 419,929. Patented Jan. 21, 1890.

N. Finns, mmmm m, Waxhinglm m a UNITED STATES PATENT OFFICE.

ALONZO COOK, OF ST. PAUL, MINNESOTA.

BlLGE-WATER PUMP.

SPECIFICATION forming part of Letters Patent No. 419,929, dated January21, 18 90.

Application filed September 11, 1389. Serial No. 323,642. (No model.)

To all whom it may concern:

Be it known that I, ALONZO COOK, a citizen of the United States,residing at St. Paul, in the county of Ramsey and State of Minnesota,have invented certain new and useful Improvements in Bilgeater Pumps;and I do declare the following to be a full, clear,

and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to the letters ofreference marked thereon, which form a part of this specification.

My invention is a new improved bilge-water pump; and it consists in thenovel construction and arrangement of its parts herein set forth.

In the accompanying drawings, Figure 1 is an elevation of the pump. Fig.2 is a vertical section of the pump. Fig. 3 is a flange to be secured tothe cylinder A. Fig. 4. is an oval flange to be secured to the bottom ofthe vessel.

Fig. 2 is a vertical sectional view of Fig. 1,

the outside cylinder A standing perpendicularly and fastened down on theinner face of the bottom of the vessel by a flange b. Two-thirds,circumferential, of said cylinder A, near its lower end, is cut away onits rear side, leaving an opening a, onethird of said cylinder beingleft for its support, and the hollow cylinder B passes down on theinside of cylinder A down through the bottom of the vessel into thewater below. The rear edge I) of the lower end of said cylinder is cuton a bevel, running down to a point 19 The said inside cylinder has arear opening b two-thirds of its rear part being cut away to correspondwith the opening a just described. To strengthen the said cylinder Bthere is attached to its point 12 a sliding brace 0, its freeend'extending up on an angle into a recess 0, cut in the bottom of thevessel, and its hook end hooking over the stirrup 0, secured crosswisein said slot, said rod holding the lower end of said cylinder firmly andkeeping it from bending backward, and also shearing off drifts when thepump is at work. \Vhen the cylinder B is hauled up, the said brace 0'slides forward over the stirrup 0 into the recess 0, flush with thebottom of the vessel. Near the lower end of the said cylinder B arehinged two half-valves c and when the vessel is in motion and saidcylinder is shipped down said half-valves fall down of their own weightand by the downward suction produced by the forward movement of thevessel and rest against the block 0 which holds said half-valves apartat the bottom, so that when the vessel stops the force of the waterbelow throws them up against the shoulder 0 and in this position theyprevent the Water from forcing its way up into the hull of the vessel.

The cylinder B is capped over on its upper end tight, and a screw-shaftD passes down through a threaded casting e and through the upper deck Einto a swivel e, set in the cap on the upper end of said cylinder B.There may be packing around said cylinder B, if deemed necessary. Bymeans of said screwshaft D the cylinderB is shipped up and down. Thereis another screw-shaft F passing down through a threaded casting f, andthrough the upper deck into a swivel f, which connects it with the shaftf which passes down on the outside of the cylinderA and through a sleevef in a brace secured to said cylinder, and down to and is secured to thesafetyvalve G, which covers and closes the opening a in the rear part ofsaid cylinder. The lower end of said shaft f is divided into two arms fthe lower ends of which are secured to said valve G. By turning thescrew-shaft F said valve is shipped up and down, and when down itslowerend fits into a circular groove in the flange b of the outside cylinderA. There are also three braces g extending up from the flange 12 againstsaid safety-valve, holding it up against the said cylinder airtight andkeeping all water from coming up into the vessel when said valve isdown.

Fig. 1 shows the pump down in position, cylinder B hauled up even withthe bottom of the vessel, and the brace C shipped up over the stirrup cin the recess 0 in the bottom of the vessel.

Fig. 2 shows the cylinder B thrust down into the water as when the pumpis working and the vessel is moving through the water.

Fig. 3 shows the flange b with three braces g to hold the safety-valve Gtight against the cylinder A. when said safety=valve is down in place.

Fig.4 showsthe perforated oblong :guard having the flange h 'for thelower end of the cylinder B to work through and a slot h for the bracec. This guard H extends over the brace C and pump -hole, and is boltedup against the bottom of the vessel, with the flange It turned down inorder to keep snags or drift from going up into the pump-hole.

The pump, as a whole, consists of a perpena dicular cylinder A, with acircular flange I) attached to its lower end, which is bolted down totheinside of the vessel and holds said cylinder securely in place, thepump proper or inside cylinder B, which works up and down on the insideof the large cylinder A and down through the bottom-of the vessel intothe water below .to such a distance, depending upon the diameter of thepump, that'the-vessel will be thoroughly drained when in motion, theafter side of said cylinder B being cut on an angle b',running down tothe point 19 which angle gives the pump its life and working-power,producing a suction which drains the vessel when in motion.

WVhen the cylinder B and brace C are shipped up and the safety-valve Gis down, as shown in Fig. 1, all water is kept from coming up into thevessel. The perpendicular edges of said safety-valve G run ,up anddowninguides g, which are bolted to the outside of cylinder A.

This pump may be made small enough and adapted to the use of thesmallest vessels, or large enough to thoroughly drain the largest vesselafloat. The valves 0 are so constructed that'they are entirelyautomatic, opening of themselves when the cylinder B is in the waterandthe vessel is moving forward, and closing of themselves when thevessel stops. 1

Having described my invention, what I claim as new, and desire to secureby Let-' ters Patent, is E 1. An automatic'b'ilge water pump consist ingof an outer perpendicular cylinder A, having the rear opening a andflange b, secured to the bottom of the vessel by means of said flange,flange I), having a circulargroove, safetyevalve G, working against theouter face of said outer cylinder and in guides g and adapted to vclosesaid opening ct, shaft f having its lower end divided into two parts:and secured to said safety-valve, its upper end passing through sleeve f2 and bearing the rear-opening b and on its-upper end cap and swivele',-rod D, its lower end working 1n said swivel e and its upper partpassing through said deck E and Working in a threaded nut e, secured tothe upper face of sa1d deck, substantially as shown and described.

2. In an automatic bilge-water pump consistin g of a perpendicularhollow cylinder 1}, having the flange b and rear opening 12 sa1d flangesecured to the inner face of the bottom of the vessel, hollow cylinderB, having the rear opening a registering with sand opening 19 andbeveled end b, and work ng up and down in said cylinder A, and having onits inside and near its lower end the automatic valves 0 screw-shaft D,its lower end swiveled in swivel e, secured onthe upper end of saidcylinder, its upper end and threaded part working in a threaded nut e,

secured to the floor of the main deck E, substantially as shown anddescribed.

3. In combination with a bilge-water pump, substantially as shown anddescribed, and having in the after side of its cylinder'A and B andneartheir lower ends openings a and b the-safety-valve G, adapted toclose said openings and working up and down in guides g, braces g, oneend secured to the flange b and the other resting against said valve,rod f secured to said valve and vpassing up through sleeve f and intotheswivel, f, screw-shaft F, its lower end swiveled. in the swivel f andits upper part .passingthrough a threaded nut f, secured to .-the upperdeck,

substantially as shown and described, and for the purposes set forth.

4. In combination with an automatic bilgewater puinp,-substantially asshown and described, the brace C, having its rear end pivoted to thelower end of the cylinderB, its forward end hooked and resting over Ithe stirrups c in the bottom of thevessel and adapted to be countersunkinto the slot c in said bottom when the said cylinder is hauled up,substantially as shown and described.

5. In combination with a bilgewater pump, substantially as shown anddescribed, the perforated guard I-I, having the perpendicular flange h,opening 71 for the lower end of cylinder B to work through, andperpendicular. and horizontal slot h, forbrace O to work through,substantially as shown. :and described.

In testimony whereof I aflix my signature in presence of two witnesses.

ALON'ZO COOK.

WVitnesses:

FRANK FARISH PRICE, ALFRED E. HEss.

IIO

